<?php

/**
 * PHPTAL templating engine
 *
 * PHP Version 5
 *
 * @category HTML
 * @package  PHPTAL
 * @author   Laurent Bedubourg <lbedubourg@motion-twin.com>
 * @author   Kornel Lesiński <kornel@aardvarkmedia.co.uk>
 * @license  http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
 * @version  SVN: $Id$
 * @link     http://phptal.org/
 */

/**
 * Reads template from the filesystem
 *
 * @package PHPTAL
 */
class PHPTAL_FileSource implements PHPTAL_Source {

  private $_path;

  public function __construct($path) {
    $this->_path = realpath($path);
    if ($this->_path === false)
      throw new PHPTAL_IOException("Unable to find real path of file '$path' (in " . getcwd() . ')');
  }

  public function getRealPath() {
    return $this->_path;
  }

  public function getLastModifiedTime() {
    return filemtime($this->_path);
  }

  public function getData() {
    $content = file_get_contents($this->_path);

    // file_get_contents returns "" when loading directory!?
    if (false === $content || ("" === $content && is_dir($this->_path))) {
      throw new PHPTAL_IOException("Unable to load file " . $this->_path);
    }
    return $content;
  }

}
